LAURA NATAL RODRIGUES

LAURA NATAL RODRIGUES

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Acceptance and commissioning in radiosurgery
2008 - RODRIGUES, L.N.; TORETI, D.L.; MENEGUSSI, G.; SILVA, M.A.; RUBO, R.; SANTOS, G.R.
Quality assurance program for radiosurgery at clinicas hospital: results of implementation
2009 - MENEGUSSI, G.; SILVA, M.A.; RUBO, R.; RODRIGUES, L.N.
Implantacao do sistema da qualidade no Laboratorio de Calibracao de Instrumentos do IPEN/SP
2003 - POTIENS, M.P.A.; VIVOLO, V.; RODRIGUES, L.N.; CALDAS, L.V.E.
Comparison of two ionization chamber used absolute dose for intensity modulated radiotherapy of prostate quality assurance
2005 - CECILIO, P.J.; CRUZ, J. da; RODRIGUES, L.; SANTOS, A.; MARTINS, L.; CAPRIOGLIO, L.
Verification of the intensity modulated radiation therapy treatments (IMRT): methodology of Hospital Albert Einstein - São Paulo
2005 - CECILIO, P.J.; CRUZ, J. da; RODRIGUES, L.; CAPRIOGLIO, L.; SILVA, A.; MARTINS, L.
Calculo independente de dose para tratamentos de arco dinamico com colimador micromultilaminas
2006 - DELGADO, JUAN F.; VIEIRA, ANDRE M.M.; CRUZ, JOSE C.; RODRIGUES, LAURA N.
Implementation of a quality assurance program for computerized treatment planning systems
2007 - CAMARGO, PRISCILLA R.T.L.; RODRIGUES, LAURA N.; FURNARI, LAURA; RUBO, RODRIGO A.
In the present investigation, the necessary tests for implementing a quality assurance program for a commercial treatment planning system (TPS), recently installed at Sao Paulo University School of Medicine Clinicas Hospital—Brazil, was established and performed in accordance with the new IAEA publication TRS 430, and with AAPM Task Group 53. The tests recommended by those documents are classified mainly into acceptance, commissioning (dosimetric and nondosimetric), periodic quality assurance, and patient specific quality assurance tests. The recommendations of both IAEA and AAPM documents are being implemented at the hospital for photon beams produced by two linear accelerators. A Farmer ionization chamber was used in a urn:x-wiley:00942405:media:mp2779:mp2779-math-0001 phantom with a dose rate of 320 monitor unit (MU)/min and 50 MU in the case of the dosimetric tests. The acceptance tests verified hardware, network systems integration, data transfer, and software parameters. The results obtained are in good agreement with the specifications of the manufacturer. For the commissioning dosimetric tests, the absolute dose was measured for simple geometries, such as square and rectangular fields, up to more complex geometries such as off-axis hard wedges and for behavior in the build up region. Results were analysed by the use of confidence limit as proposed by Venselaar et al. [Radio Ther. Oncol. 60, 191–201 (2001)]. Criteria of acceptability had been applied also for the comparison between the values of MU calculated manually and MU generated by TPS. The results of the dosimetric tests show that work can be reduced by choosing to perform only those that are more crucial, such as oblique incidence, shaped fields, hard wedges, and buildup region behavior. Staff experience with the implementation of the quality assurance program for a commercial TPS is extremely useful as part of a training program.